DO NOT CONNECT POWER SUPPLY UNTIL SWITCH IS COMPLETE-
LY INSTALLED. MAKE SURE ELECTRICAL SERVICE TO THE SWITCH
IS LOCKED IN “OFF” POSITION.
WARNING: TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR
INJURY TO PERSONS - OBSERVE THE FOLLOWING:
1. Use this unit only in the manner intended by the manu-
facturer. If you have questions, contact the factory.
2. Before servicing or cleaning, switch power off at service
panel and lock service panel to prevent circuit from being
switched on accidentally. When the service disconnecting
means cannot be locked, securely fasten a prominent
warning device, such as a tag, to the service panel.
3. Installation work and electrical wiring must be done by
qualified person(s) in accordance with all applicable
codes and standards, including fire-rated construction.
4. When cutting or drilling into wall or ceiling, do not dam-
age electrical wires or other hidden utilities.
Electrical Connection
The DB10 is suitable for controlling 115VAC fans up to 3.8 amps.
Wiring Procedure
A 4"x4" electrical box is recommended for mounting the DB10
switch and for making the electrical connections to the power supply
and to the fan.
Using the wire nuts provided, connect the incoming electrical supply,
the switch leads and the power supply to fan as shown in the
schematic on the right.
STARTING POSITION
FOR INSTALLATION
MORE SENSITIVE
TO PRESSURE
LESS SENSITIVE
TO PRESSURE
RED
WHITE
GREEN
BLACK
LINE
GROUND
NEUTRAL
LOAD
NEUTRAL
GROUND
(NOT INCLUDED)
WIRING BOX
POWER SUPPLY
115 VAC
I
FAN
MOTOR
Additional Installation Notes
The DB10 operates by sensing pressure in the dryer duct. The fan by
itself may not create enough resistance in the system for sufficient
pressure to build up. For this reason, the duct system should include
at least one elbow and the pressure tube should be tapped into the
high pressure side of this elbow (between the dryer and the elbow).
For proper operation, the DB10 should be installed vertically as shown.
If installed horizontally or on a slant, gravity will cause the diaphragm
inside the switch to move out of its neutral position. This can either pre-
vent the fan from being activated when the dryer is on or it can cause
the fan to be activated by itself without dryer operation.
Since the DB10 is activated by pressure inside the duct, sufficient
pressure can be generated by wind blowing into the duct from the out-
side. If the wind gust is sustained for five seconds or more, the fan
may be activated and run for ten minutes. Should this occur, it will
cause no harm to the fan or to the dryer.
Deviation from the vertical installation should not be necessary.
However, some circumstances may require adjustments for sensitiv-
ity. If the airflow from the dryer is not enough to activate the switch,
the sensitivity can be adjusted as shown.
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